Features:_x000D_ _x000D_ This ADF4351 signal source development board has well designed circuit board layout. _x000D_ It can be controlled by the upper computer official software. _x000D_ All control pins are leaded out for convenient operation. _x000D_ Default + ?50ppm 25M active crystal oscillator. _x000D_ Three?wire serial peripheral interface bus lead to control pin and state locking pin, allowing all functions including point frequency sweep and frequency hopping. _x000D_ _x000D_ Specifications:_x000D_ Output frequency range: 35MHz ? 4.4GHz _x000D_ Supply voltage: 4?9V (5VDC)_x000D_ Output signal:_x000D_ 2.2GHZ??4.4GHz sine wave (fundamental)_x000D_ 35MHZ??2.2GHz squarewave (fundamental division)_x000D_ Output signal: output speed, signal strength: + 5dBm (programmable)_x000D_ RF connector: SMA female head_x000D_ Control Interface: Three?wire Serial Peripheral Interface Bus_x000D_ Reference Clock: 10.000MHZ (default), through the interface to an external SMA_x000D_ Size: Approx. 4.8 x 4.9cm / 1.89 x 1.93inch_x000D_ Weight:15g_x000D_ _x000D_ Connection: _x000D_ The module can pin microcontroller LCD1602 / LCD12864 module connection (can be plugged directly Backward), convenient software debugging, both lock indicator (Lock). Pin correspond to the following:_x000D_ 1.GND ????????????????????????? GND_x000D_ 2.VDD (5V) ??????????????????? VCC_x000D_ 3.VO ?????????????????????????? NC (empty)_x000D_ 4.RS ?????????????????????????? NC (empty)_x000D_ 5.R / W ????????????????????????? MUXOUT_x000D_ 6.EN ?????????????????????????? CLK_x000D_ 7.DB0 ????????????????????????? DATA_x000D_ 8.DB1 ????????????????????????? LE_x000D_ 9.DB2 ????????????????????????? CE (has 10K pullup)_x000D_ 10.DB3 ????????????????????????? GND (do not take)_x000D_ _x000D_ Reference Clock:_x000D_ 10.000MHZ default reference clock signal is active clock or an external reference clock signal, you need to modify the three?way connection with a soldering iron, connect EXT_REF external reference signal._x000D_ _x000D_ RF output:_x000D_ For ease of use, the default is broadband output, the output of two differential signals, one way can be used to output use, the other way can be used to monitor the output._x000D_ _x000D_ Package included:_x000D_ 1 x ADF4351 RF Signal Source Frequency Synthesizer_x000D_ _x000D_ _x000D_ Note:_x000D_ Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.